1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gelneren [198K]
2 years ago
7

A number of students prepared for an examination. Arts, Religion and sculpture. Out of this number, 15 took arts, 20 took religi

on and 23 took sculpture, 9 took both religion and sculpture, 6 took both arts and sculpture and all those who took arts also took religion. One student fell ill and failed to write any of the papers. How many students took exactly one of the examination papers?​
Mathematics
1 answer:
True [87]2 years ago
5 0
I got 8 students.
Hope this helps :)
You might be interested in
(W+4)(3w-2) please solveeed
Shkiper50 [21]

Step-by-step explanation:

{:}\longrightarrow\sf (w+4)(3w-2)

{:}\longrightarrow\sf w(3w-2)+4 (3w-2)

{:}\longrightarrow\sf 3w^2-2w+12w-8

{:}\longrightarrow\sf 3w^2+10w-8

7 0
3 years ago
Read 2 more answers
What the answer of 4 / 1 1/8
ICE Princess25 [194]
If you mean 4 / (11/8)

= 4 * 8/11
= 32/11

= 2 10/11
= 2.909
4 0
3 years ago
Find the 2th term of the expansion of (a-b)^4.​
vladimir1956 [14]

The second term of the expansion is -4a^3b.

Solution:

Given expression:

(a-b)^4

To find the second term of the expansion.

(a-b)^4

Using Binomial theorem,

(a+b)^{n}=\sum_{i=0}^{n}\left(\begin{array}{l}n \\i\end{array}\right) a^{(n-i)} b^{i}

Here, a = a and b = –b

$(a-b)^4=\sum_{i=0}^{4}\left(\begin{array}{l}4 \\i\end{array}\right) a^{(4-i)}(-b)^{i}

Substitute i = 0, we get

$\frac{4 !}{0 !(4-0) !} a^{4}(-b)^{0}=1 \cdot \frac{4 !}{0 !(4-0) !} a^{4}=a^4

Substitute i = 1, we get

$\frac{4 !}{1 !(4-1) !} a^{3}(-b)^{1}=\frac{4 !}{3!} a^{3}(-b)=-4 a^{3} b

Substitute i = 2, we get

$\frac{4 !}{2 !(4-2) !} a^{2}(-b)^{2}=\frac{12}{2 !} a^{2}(-b)^{2}=6 a^{2} b^{2}

Substitute i = 3, we get

$\frac{4 !}{3 !(4-3) !} a^{1}(-b)^{3}=\frac{4}{1 !} a(-b)^{3}=-4 a b^{3}

Substitute i = 4, we get

$\frac{4 !}{4 !(4-4) !} a^{0}(-b)^{4}=1 \cdot \frac{(-b)^{4}}{(4-4) !}=b^{4}

Therefore,

$(a-b)^4=\sum_{i=0}^{4}\left(\begin{array}{l}4 \\i\end{array}\right) a^{(4-i)}(-b)^{i}

=\frac{4 !}{0 !(4-0) !} a^{4}(-b)^{0}+\frac{4 !}{1 !(4-1) !} a^{3}(-b)^{1}+\frac{4 !}{2 !(4-2) !} a^{2}(-b)^{2}+\frac{4 !}{3 !(4-3) !} a^{1}(-b)^{3}+\frac{4 !}{4 !(4-4) !} a^{0}(-b)^{4}=a^{4}-4 a^{3} b+6 a^{2} b^{2}-4 a b^{3}+b^{4}

Hence the second term of the expansion is -4a^3b.

3 0
3 years ago
What percent of 80 is 25
JulsSmile [24]

Answer: 31.25%

Step-by-step explanation: To answer the question <em>what percent of 80 is 25</em>, we translate the question into an equation.

So we have "what percent" that's x, "of 80" means times 80, "is 25" = 25.

Now to solve for <em>x</em>, since <em>x</em> is being multiplied by 80, we need to divide by 80 on both sides of the equation. On the left side of the equation the 80's cancel and we have <em>x</em> and on the right side of the equation, we have 25 ÷ 80 which gives us 0<em>.</em>3125. Now, remember that we want to right our answer as a percent so to write 0.3125 as a percent, we move the decimal point 2 places to the right and we get 31.25%.

Therefore, 31.25% of 80 is 25.

8 0
3 years ago
Solve -3x+y=-7 by slope intercept form
marin [14]

can u add picture?

if u dont add picture i cant solve sorry...

8 0
3 years ago
Other questions:
  • How many bits are required to represent the decimal numbers in the range from 0 to 999 in straight binary code?
    13·1 answer
  • Does the remainder round up or down to get an average whole number
    10·1 answer
  • Identify the explanatory variable and the response variableA golfer wants to determine if the amount of practice every year can
    5·1 answer
  • WILL MARK THE BRAINIEST!!! LOTS OF POINTS!! HELP NOW
    8·1 answer
  • What is the sign of a• (-b/b) when a=0 and b &lt; 0
    6·1 answer
  • If the height of water in the tank is 10cm what is the volume of the water​
    15·2 answers
  • Judy wants to buy juice boxes at the lowest unit rate. Which is the best
    7·2 answers
  • el crecimiento de las raíces se considera negativo respecto al nivel del suelo y el de los troncos se considera positivo con res
    6·1 answer
  • What is the factored form of this expression? 7- 12x+36 А. (x-12)(x-3) B. (x-6)(x+6) c. (x+6) 2 D. (x-62​
    10·1 answer
  • If the list price of bicycle is Rs 1000 and it is sold for Rs 900,cfind the list price of the article.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!